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Descriptor — may refer to file descriptor, an abstract key for accessing a file index term, also known as a descriptor in information retrieval molecular descriptor, which helps characterize a chemical compound segment descriptor, used for memory addressing… … Wikipedia

descriptor — /di skrip teuhr/, n. 1. a significant word or phrase used to categorize or describe text or other material, esp. when indexing or in an information retrieval system. 2. Computers. a data item that stores the attributes of some other datum: a task … Universalium